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Interest Calculator

●Working

Calculate simple and compound interest

Calculator Settings

Simple Interest Calculator

Calculate interest earnings using the formula I = P × r × t

Calculation Inputs
Enter the principal amount, interest rate, and time period
Calculation Results
Enter values above to see calculation results
Quick Info
• Simple interest is calculated on the original principal only
• Formula: I = P × r × t
• Rate should be the annual interest rate
• Time should be in years
• Results update automatically as you type
Simple Interest Formula & Methodology

Formula Explanation

I = P × r × t
Simple Interest Formula
I = Interest earned
P = Principal amount (initial investment)
r = Annual interest rate (as decimal)
t = Time period in years

Key Characteristics:

  • • Interest calculated only on original principal
  • • No compounding effect
  • • Linear growth over time
  • • Easy to calculate and understand

Calculation Steps

Common Uses:

  • • Personal loans and credit
  • • Simple savings accounts
  • • Short-term investments
  • • Basic financial planning

Interest Methodology

Comprehensive methodology and accuracy information

95% Accurate
Highly Accurate
Last Updated
January 2024
Version
1.0.0
Important Disclaimer
This calculator is provided for educational and informational purposes only. Results should be verified with professional consultation for critical decisions.
95%
Accuracy Rate
1
Formulas Used
2
Data Sources

About This Calculator

This interest calculator is designed to provide accurate calculations for your specific needs. Our calculators are thoroughly tested and follow industry standards to ensure reliable results.

Key Features

  • • Instant calculations with real-time results
  • • Mobile-friendly responsive design
  • • No registration or personal data required
  • • Free to use with no limitations

How to Use

  • • Enter your values in the input fields
  • • Results update automatically as you type
  • • Use the clear button to reset all fields
  • • Copy or save results for your records

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